Re: GPS interference and contests

The military has vast testing ranges in places like Johnson Island in the
Pacific Ocean. They can test jamming there although it's probably more
expensive than China Lake or White Sands.

The reasons for testing jamming of GPS devices is due to well grounded
concerns about post 9/11 civil defense. You can probably imagine scenarios
so there no need to spell it out in a public forum. The latest block of GPS
satellites will have the capability to deny enemy access in a restricted
geographic area eliminating the need for jamming.

Bill Daniels

"mike" <pcarris@xxxxxxxxx> wrote in message
news:3a848482-6d65-4278-9aab-19be0c751ab0@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I agree, but it is a National Security issue-Good luck on changing
that.


On Jan 21, 10:22 am, ZZ <zzuluz...@xxxxxxxxxxxxx> wrote:
Even though this thread is related to GPS jamming affecting contest
flight documentation, please allow me this little rant.

GPS navigation is now fully accepted in the US and there are even some
instrument approaches based upon GPS.

Now I ask, NOTAMS or not, why should it be legal for ANYONE to jam a
system which is used in air navigation? Pilots who are fortunate not to
live/fly near a military installation who jam these signals can enjoy
the system. The rest of us have to put up with unreliable/intermittent
use.

Is this an issue that the AOPA and the SSA should try to address?

Paul

Bill Daniels wrote:
It seems as if GPS interference testing is becoming more widespread.
See:http://www.navcen.uscg.gov/gps/gpsnotices/GPS_Interference.pdf

I wonder if anyone has thought of what might happen if one of these
'tests'
happened near the time an place of a sechduled contest. Basically, you
would lose all GPS systems including loggers. Back to photos? Anyone
thinking about contingencies?

Bill Daniels



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